<template>
  <div class="">
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 添加角色 -->
      <el-row>
        <el-col>
          <el-button type="primary" @click="addRole">添加角色</el-button>
        </el-col>
      </el-row>

      <!-- 添加角色列表 -->
      <el-table :data="rolelist" border stripe>
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom', i1 === 0 ? 'bdtop' : '', 'vcenter']"
              v-for="(item1, i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row, item1.id)">
                  {{ item1.authName }}</el-tag
                >
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 二级权限和三级 -->
              <el-col :span="19">
                <el-row
                  :class="[i2 === 0 ? '' : 'bdtop', 'vcenter']"
                  v-for="(item2, i2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      closable
                      @close="removeRightById(scope.row, item2.id)"
                    >
                      {{ item2.authName }}
                    </el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag
                      v-for="(item3) in item2.children"
                      :key="item3.id"
                      type="warning"
                      closable
                      @close="removeRightById(scope.row, item3.id)"
                    >
                      {{ item3.authName }}
                    </el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope" width="300px">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="iseDitRole(scope.row.id)"
              >编辑</el-button
            >
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="deleteRole(scope.row.id)"
              >删除</el-button
            >
            <el-button
              type="warning"
              icon="el-icon-setting"
              size="mini"
              @click="showSetRightDialog(scope.row)"
              >分配权限</el-button
            >
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 编辑 -->
    <el-dialog title="编辑权限信息" :visible.sync="editRole" width="30%">
      <el-input v-model="editForm.roleName" :disabled="true"> </el-input>
      <el-input v-model="editForm.roleDesc"></el-input>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editRole = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo(editForm.roleId)"
          >确 定</el-button
        >
      </span>
    </el-dialog>

    <!-- 添加 -->
    <el-dialog title="添加新用户" :visible.sync="showAdd" width="30%">
      <el-input
        v-model="AddFrom.roleName"
        placeholder="请输入角色名称"
      ></el-input>
      <el-input
        v-model="AddFrom.roleDesc"
        placeholder="请输入角色描述"
      ></el-input>
      <span slot="footer" class="dialog-footer">
        <el-button @click="showAdd = false">取 消</el-button>
        <el-button type="primary" @click="AddRole()">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配权限 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
    >
      <el-tree
        :data="rightlist"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
 
<script>
export default {
  data() {
    return {
      rolelist: [],
      editRole: false,
      editForm: {},
      showAdd: false,
      AddFrom: {},
      //控制分配 权限对话框的显示和隐藏
      setRightDialogVisible: false,
      //   所有权限的数据
      rightlist: [],
      //   树形控件的属性对象
      treeProps: {
        label: 'authName',
        children: 'children',
      },
      //   默认选中的节点ID值
      defKeys: [],
      // 当前即将分配角色的ID
      roleId: '',
    }
  },
  created() {
    this.getrolelist()
  },
  methods: {
    //获取角色列表
    async getrolelist() {
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200)
        return this.$message.error('获取角色列表失败')
      this.rolelist = res.data
      console.log(this.rolelist)
    },

    // 点击编辑用户信息按钮
    async iseDitRole(id) {
      const { data: res } = await this.$http.get(`roles/${id}`)
      if (res.meta.status !== 200)
        return this.$message.error('查询用户信息失败')
      console.log(res)
      this.editForm = res.data
      this.editRole = !this.editRole
    },

    // 编辑用户信息
    async editUserInfo(id) {
      const { data: res } = await this.$http.put('roles/' + id, {
        roleName: this.editForm.roleName,
        roleDesc: this.editForm.roleDesc,
      })
      if (res.meta.status !== 200) this.$message.error('修改失败')
      this.editRole = false
      this.getrolelist()
      this.$message.success('修改成功')
    },

    //删除用户
    async deleteRole(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      if (confirmResult !== 'confirm')
        return this.$message.info('已经取消了删除')
      this.$http.delete('roles/' + id)
      this.getrolelist()
      this.$message.success('删除用户成功！')
    },

    //增加新用户
    addRole() {
      this.showAdd = !this.showAdd
    },

    async AddRole() {
      const { data: res } = await this.$http.post('roles', {
        roleName: this.AddFrom.roleName,
        roleDesc: this.AddFrom.roleDesc,
      })
      console.log(res)
      if (res.meta.status !== 201) return this.$message.error('添加失败')
      this.showAdd = false
      this.getrolelist()
    },

    // 根据ID删除对应权限
    async removeRightById(role, rightId) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该权限, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch((err) => err)
      if (confirmResult !== 'confirm') {
        return this.$message.info('取消了删除')
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${rightId}`
      )
      if (res.meta.status !== 200) return this.$message.error('删除权限失败')
      role.children = res.data
    },

    //展示分配权限的对话框
    async showSetRightDialog(role) {
      this.roleId = role.id
      const { data: res } = await this.$http.get('rights/tree')
      if (res.meta.status !== 200)
        return this.$message.error('获取权限数据失败')
      this.rightlist = res.data
      console.log(this.rightlist)
      this.getLeafKeys(role, this.defKeys)

      this.setRightDialogVisible = true
    },

    //递归函数,获取角色下所有三级权限的ID
    getLeafKeys(node, arr) {
      arr = []
      if (!node.children) return arr.push(node.id)

      node.children.forEach((item) => {
        this.getLeafKeys(item, arr)
      })
    },

    //点击为角色分配权限
    async addotRights() {
      const keys = [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys(),
      ]

      const idStr = keys.join(',')
      const { data: res } = await this.$http.post(
        `roles/${this.roleId}/rights`,
        { rids: idStr }
      )
      if (res.meta.status !== 200) return this.$message.error('分配权限失败')
      this.getrolelist()
      this.setRightDialogVisible = false
    },
  },
}
</script>
 
<style scoped>
.el-input {
  margin-bottom: 10px;
}
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>